Anyone have this occurring / know of a fix other than drive faster?

Got car at 161,000, now has 162,000 miles, pulled pan for regular maint, no material just some evidence of graphite in oil, changed filter, old oil put back in.

Feels like torque converter is locking up too soon in 5th gear / holding 5th too long, vibration is like a standard shift that is in top gear too soon. Not an engine missfire issue though I might accept it might be an injector balance issue. ( Engine is electric motor smooth otherwise even with sagging motor mounts. ) One drive shaft joint had been replaced sometime in the past, other is OK but rubber might be getting hard.

Changed motor mounts as they were sagging, this got rid of the harshness of vibration but it is still there. My 97 SL320 with the same drive line does not have this vibration.

Found a reference to this problem on a Chrysler Crossfire message board, it states that a TC relearn might need to be done. Car gets driven from cold 30 to 40 MPH until coolant temp has risen 10*C, stop car wait 20 sec, drive again until temp goes up another 10* C. Once coolant temp has leveled off, drive car 30 - 40 MPH for 10 min at constant load.

Autostick Transmission vibration at low speeds - Page 2 - CrossfireForum.org

( Mercedes TSB )
DTB
Date:
March 23, 2006
Order No.:
P-B-27.60/43b
Supersedes:
P-B-27.60/43a dated May 3, 2005

Any ideas?
Thanks